Nebulizer Vibrating Aperture Plate Drive Frequency Control and Monitoring

2. The nebulizer of claim 1, wherein the electrical drive parameter is a drive current to the aperture plate.

3. The nebulizer of claim 1, wherein the controller is configured to initiate the full scan if the short scan measures a change in the electrical drive parameter outside a predetermined tolerance.

4. The nebulizer of claim 1, wherein the short scan has fewer than five measuring points.

5. The nebulizer of claim 1, wherein the short scan is performed at regular intervals.

6. The nebulizer of claim 5, wherein the regular intervals are sub-second intervals.

7. The nebulizer of claim 1, wherein the full scan has five to three-hundred measuring points.

8. The nebulizer of claim 7, wherein the full scan has one-hundred to three-hundred measuring points.

9. The nebulizer of claim 1, wherein the controller is configured to dynamically determine, from the full scan, a frequency associated with a measuring point of the short scan.

10. The nebulizer of claim 9, wherein the controller is configured to select a frequency value corresponding to lowest electrical drive parameter as a frequency for a measuring point of the short scan.

11. The nebulizer of claim 10, wherein said lowest electrical drive parameter is determined to correspond to a resonant frequency, and a frequency value for a measuring point of the full scan with lowest electrical drive parameter is stored for use as a measuring point frequency for the short scan.

13. The nebulizer of claim 12, wherein the controller is further configured to determine a slope value from the comparison and identify the end-of-dose when the slope value is above a threshold that indicates end-of-dose.

15. The method of claim 14, wherein the short scan has fewer than five measuring points and the full scan has five to three-hundred measuring points.

17. The method of claim 14, wherein the short scan is performed at regular intervals.